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Article: Conductance of a quantum point contact in the presence of a scanning probe microscope tip
Title | Conductance of a quantum point contact in the presence of a scanning probe microscope tip |
---|---|
Authors | |
Keywords | Physics |
Issue Date | 2002 |
Publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ |
Citation | Physical Review B (Condensed Matter), 2002, v. 65 n. 20, article no. 205321 , p. 1-6 How to Cite? |
Abstract | Using the recursive Green's-function technique, we study the coherent electron conductance of a quantum point contact in the presence of a scanning probe microscope tip. Images of the coherent fringe inside a quantum point contact for different widths are obtained. It is found that the conductance of a specific channel is reduced while other channels are not affected, as long as the tip is located at the positions corresponding to that channel. Moreover, the coherent fringe is smoothed out by increasing the temperature or the voltage across the device. Our results are consistent with the experiments reported by Topinka et al. [Science 289, 2323 (2000)]. |
Persistent Identifier | http://hdl.handle.net/10722/43356 |
ISSN | |
ISI Accession Number ID | |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | He, GP | en_HK |
dc.contributor.author | Zhu, SL | en_HK |
dc.contributor.author | Wang, ZD | en_HK |
dc.date.accessioned | 2007-03-23T04:44:11Z | - |
dc.date.available | 2007-03-23T04:44:11Z | - |
dc.date.issued | 2002 | en_HK |
dc.identifier.citation | Physical Review B (Condensed Matter), 2002, v. 65 n. 20, article no. 205321 , p. 1-6 | - |
dc.identifier.issn | 0163-1829 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/43356 | - |
dc.description.abstract | Using the recursive Green's-function technique, we study the coherent electron conductance of a quantum point contact in the presence of a scanning probe microscope tip. Images of the coherent fringe inside a quantum point contact for different widths are obtained. It is found that the conductance of a specific channel is reduced while other channels are not affected, as long as the tip is located at the positions corresponding to that channel. Moreover, the coherent fringe is smoothed out by increasing the temperature or the voltage across the device. Our results are consistent with the experiments reported by Topinka et al. [Science 289, 2323 (2000)]. | en_HK |
dc.format.extent | 672851 bytes | - |
dc.format.extent | 45056 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.format.mimetype | application/msword | - |
dc.language | eng | en_HK |
dc.publisher | American Physical Society. The Journal's web site is located at http://prb.aps.org/ | en_HK |
dc.relation.ispartof | Physical Review B (Condensed Matter) | - |
dc.rights | Copyright 2002 by The American Physical Society. This article is available online at https://doi.org/10.1103/PhysRevB.65.205321 | - |
dc.subject | Physics | en_HK |
dc.title | Conductance of a quantum point contact in the presence of a scanning probe microscope tip | en_HK |
dc.type | Article | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1098-0121&volume=65&issue=20&spage=205321:1&epage=6&date=2002&atitle=Conductance+of+a+quantum+point+contact+in+the+presence+of+a+scanning+probe+microscope+tip | en_HK |
dc.identifier.email | Wang, ZD: zwang@hkucc.hku.hk | en_HK |
dc.identifier.authority | Wang, ZD=rp00802 | en_HK |
dc.description.nature | published_or_final_version | en_HK |
dc.identifier.doi | 10.1103/PhysRevB.65.205321 | en_HK |
dc.identifier.scopus | eid_2-s2.0-0037095517 | en_HK |
dc.identifier.hkuros | 72545 | - |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-0037095517&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.volume | 65 | en_HK |
dc.identifier.issue | 20 | en_HK |
dc.identifier.spage | article no. 205321, p. 1 | - |
dc.identifier.epage | article no. 205321, p. 6 | - |
dc.identifier.isi | WOS:000176066600077 | - |
dc.publisher.place | United States | en_HK |
dc.identifier.scopusauthorid | He, GP=36140152800 | en_HK |
dc.identifier.scopusauthorid | Zhu, SL=34972495900 | en_HK |
dc.identifier.scopusauthorid | Wang, ZD=14828459100 | en_HK |
dc.identifier.issnl | 0163-1829 | - |